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Finding the Fourth Proportional to 154,970.60, 232,455.90 and 42,650.60

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Solution

The fourth proportional to 154,970.60, 232,455.90 and 42,650.60 is: 63,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,970.60 : 232,455.90 = 42,650.60 : x
  2. Step 2: Convert to fraction form
    154,970.60/232,455.90 = 42,650.60/x
  3. Step 3: Cross multiply
    154,970.60x = 232,455.90 × 42,650.60
  4. Step 4: Simplify right side
    154,970.60x = 9,914,383,608.54
  5. Step 5: Solve for x
    x = 9,914,383,608.54/154,970.60
  6. Step 6: Final answer
    x = 63,975.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.